I've never come across anybody from Central African Republic either
I do think that there is an element of culture/religion. But I don't think that explains everything, and I think multiple factors are at play.
In Indonesia they have a group of people called the Waria who are transgender, and they are extremely common. I think Indonesia is also home to the first LGBT organisation in Southeast Asia. So if this was true, we should be seeing a similar reaction there, but we don't.
Personally I think the issue is partly due to the infiltration of Salafi/Wahhabi Islam in the West. Here is an old post I made about it:
The Austrian method would be to limit the funding of any mosques to a single one-off payment, and restricting continuous funding. So mosques can still be funded and built within the UK. The only difference between the current system here and the Austrian system is that we currently permit continuous funding. It is quite evident that we have an issue with radicalism and it is also the case that who funds a mosque or Islamic group has control over what it preaches. So I don't see why it should be controversial to limit the influence of foreign Salafi and Wahhabi groups and encouraging the growth of a more British Islam.
For example, many Western European nations with large Muslim populations are largely funded from abroad and if we observe the number of Muslims in each country and look at the number of Muslims from that country who have joined ISIS, we get some rather astonishing figures.
France
1,200 have joined ISIS
Estimated Muslim population is 5 million
240 ISIS members per million Muslims in France
Belgium
440 have joined ISIS
Estimated Muslim population is 660,000
667 ISIS members per million Muslims in Belgium
Indonesia
500 have joined ISIS
Estimated Muslim population is 205 million
2.4 ISIS members per million Muslims in Indonesia
India
18 have joined ISIS
Estimated Muslim population is 172 million
0.1 ISIS members per million Muslims in India
I think everyone will agree that these figures here are astounding. I think the major difference is that countries like India and Indonesia already have well developed national Islamic organisations and groups and so there is less room or need for foreign funding and thus Salafi groups struggle more to gain a foothold. For example, the Indonesian Islamic organisation Nahdlatul Ulama has some 40 million members. The same is not true in Western nations like France, Belgium and the UK, hence our need to take action against such foreign funding.